Precision Study of Positronium: Testing Bound State QED Theory

Abstract

As an unstable light pure leptonic system, positronium is a very specific probe atom to test bound state QED. In contrast to ordinary QED for free leptons, the bound state QED theory is not so well understood and bound state approaches deserve highly accurate tests. We present a brief overview of precision studies of positronium paying special attention to uncertainties of theory as well as comparison of theory and experiment. We also consider in detail advantages and disadvantages of positronium tests compared to other QED experiments.

A talk presented at Workshop on Positronium Physics (ETH Zurich, May 30-31, 2003)

References in corpus (9)

• Theory of Light Hydrogenlike Atoms
• Order alpha^7 ln(1/alpha) Contribution to Positronium Hyperfine Splitting
• O(alpha^3 ln alpha) corrections to muonium and positronium hyperfine splitting
• Revised ${\alpha }^4$ term of lepton $g-2$ from the Feynman diagrams containing an internal light-by-light scattering subdiagram
• New Value of M_mu/M_e from Muonium Hyperfine Splitting
• Muonium hyperfine structure and hadronic effects
• Neutrino Decay of Positronium in the Standard Model and Beyond
• Precision study of positronium and precision tests of the bound state QED
• Simple Atoms, Quantum Electrodynamics and Fundamental Constants

Cited by in corpus (47)

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• Characterization of positronium properties in doped liquid scintillators
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• Limits to differences in active and passive charges
• Three-Loop Corrections to Lamb Shift in Muonium and Positronium
• Majorana flipping of quarkonium spin states in transient magnetic field
• QED spectra in the path integral formalism
• Dissociation of heavy quarkonium states in rapidly varying strong magnetic field
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• Hydrogenic entanglement
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• Expectation for the MeV Gamma-Ray Emission from Pair-Instability Supernovae
• The positronium and the dipositronium in a Hartree-Fock approximation of quantum electrodynamics
• Ultrafast laser-driven quantum dynamics in positronium chloride